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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// 定义学生结构体,包含学号、班级、姓名以及三门课程成绩
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typedef struct Student {
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char id[20]; // 使用字符串存储学号,便于处理用户输入(可能是学号或姓名)
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int class_num;
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char name[20];
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double score1;
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double score2;
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double score3;
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} Student;
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// 交换两个学生结构体的函数
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void swap(Student *a, Student *b) {
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Student temp = *a;
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*a = *b;
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*b = temp;
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}
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// 计算学生总成绩的函数,方便后续比较排序(虽然本题删除操作未直接用到,但保持代码完整性)
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double totalScore(const Student *s) {
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return s->score1 + s->score2 + s->score3;
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}
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// 根据输入的学号或姓名查找学生在数组中的索引位置,若没找到返回 -1
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int findStudentIndex(Student students[], int n, char target[20]) {
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for (int i = 0; i < n; i++) {
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if (strcmp(students[i].id, target) == 0 || strcmp(students[i].name, target) == 0) {
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return i;
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}
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}
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return -1;
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}
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// 删除指定学号或姓名的学生信息,并保持数组有序
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void deleteStudent(Student students[], int *n, char target[20]) {
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int index = findStudentIndex(students, *n, target);
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if (index!= -1) {
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for (int i = index; i < *n - 1; i++) {
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students[i] = students[i + 1];
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}
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(*n)--;
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}
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}
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// 打印学生数组信息
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void printStudents(Student students[], int n) {
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for (int i = 0; i < n; i++) {
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printf("%s %d %s %.1lf %.1lf %.1lf\n", students[i].id, students[i].class_num, students[i].name,
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students[i].score1, students[i].score2, students[i].score3);
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}
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}
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int main() {
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Student students[100]; // 假设最多存储100个学生信息,可根据实际情况调整大小
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int num_students = 3; // 初始已有3个学生信息
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// 静态初始化已有三个学生信息(按题目给定示例)
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Student s1 = {"10001", 11, "Zhang", 99.5, 88.5, 89.5};
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Student s2 = {"10002", 12, "Yang", 77.9, 56.5, 87.5};
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Student s3 = {"10003", 11, "Liang", 92.5, 99.0, 60.5};
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students[0] = s1;
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students[1] = s2;
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students[2] = s3;
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char input[20];
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printf("please input:\n");
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scanf("%s", input);
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// 查找要删除的学生是否存在
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int index = findStudentIndex(students, num_students, input);
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if (index == -1) {
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// 如果学生不存在,直接输出原有学生信息并结束程序
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printStudents(students, num_students);
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return 0;
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}
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// 如果学生存在,询问是否确定删除
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printf("Are you sure(yes/no)?\n");
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char choice[10];
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scanf("%s", choice);
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if (strcmp(choice, "n") == 0) {
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// 用户输入 n,输出所有学生信息后结束程序
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printStudents(students, num_students);
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} else if (strcmp(choice, "y") == 0) {
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// 用户输入 y,执行删除操作并输出剩余学生信息
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deleteStudent(students, &num_students, input);
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printStudents(students, num_students);
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}
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return 0;
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}
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